Winston Boron III TH-MS Microspey Fly Rod

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The TH-MS version of the Boron III rods caters to the avid Trout Spey angler. These lighter Micro Spey rods (3wt, 4wt, 5wt) utilize all the high-performance characteristics of their bigger brothers, the Boron III TH rods, but are slimmed down for more delicate applications and smaller trout. In an industry where Trout Spey is becoming increasingly popular, the TH-MS rods combine performance and technology to help pioneer the movement.


Boron III Technology - Winston’s Boron III Technology has revolutionized fly rod strength and lightweight rod design. Boron is 5x stronger than steel, 2x stiffer than steel, and 25% stronger than other graphite rods. Boron also has increased impact resistance and overall rod stability. Boron blanks have smoother energy transfer, increased hook setting power, and improved casting accuracy.


TiCH-Finished Stripping Guide w/Nanoplasma Ring - A TiCH stripping guide adds durability and performance to the Boron III TH-MS rods. A nanoplasma ring also helps Spey lines shoot through the guides more easily.

Chrome Snake Guides - These snake guides improve the castability and accuracy of the Boron III TH-MS without adding unnecessary weight to the rod. They’re also saltwater safe.

Reel Seat

Anodized Aluminum w/Double Downlocking Components - The reel seat on the Boron III TH-MS is made with durable anodized aluminum that sheds saltwater and resists corrosion. The double downlocking component anchors larger Spey reels for improved performance. The Boron III TH-MS also has a high-quality cork grip that supports infinite hand placement for optimal casting efficiency and fish-fighting leverage.

Rod Tube

Premium Graphite Rod Tube - Winston’s classic green graphite rod tube matches the blank color of the Boron III TH-MS. These tubes hold up well in all conditions and protect the rod during travel and transportation. The Boron III TH-MS also comes with a rod sock with an embroidered Winston logo.


Winston Unconditional Lifetime Guarantee - As of June 2019, Winston’s original owner guarantee covers every new Winston Boron/Graphite and Graphite fly rod against breakage or manufacturer defects. The rod owner must register the rod via warranty card or online. For all warranty work, the entire rod must be returned to Winston.

More Info

Rod Action: Fast

Best for: All Water, Streamers

Grip: Spey

Ability Level: Intermediate - Expert (learn more)

Recommended Lines

We highly recommend using a Spey specific line. Our favorite for Trout Spey applications is:

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